Stanberry climate

Stanberry Frost Dates and Growing Season

NOAA 1991-2020 normals for Conception, 12.6 km from Stanberry, elevation 1108 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Conception. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around April 17 and the first fall freeze around October 20, a growing season of about 184 days.

Median at 36°F
last April 27, first October 10
Median at 32°F
last April 17, first October 20
Median at 28°F
last April 8, first October 30

Last freeze in spring

The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.

Threshold10%20%30%40%50%60%70%80%90%
36°FMay 7May 5May 2Apr 30Apr 27Apr 24Apr 21Apr 18Apr 14
32°FApr 30Apr 26Apr 23Apr 20Apr 17Apr 14Apr 11Apr 8Apr 3
28°FApr 22Apr 17Apr 14Apr 11Apr 8Apr 5Apr 3Mar 31Mar 25
24°FApr 14Apr 9Apr 6Apr 3Apr 1Mar 30Mar 26Mar 21Mar 14
20°FApr 6Apr 2Mar 31Mar 27Mar 23Mar 19Mar 15Mar 10Mar 5
16°FMar 31Mar 26Mar 21Mar 17Mar 14Mar 10Mar 7Mar 3Feb 27

First freeze in fall

The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.

Threshold10%20%30%40%50%60%70%80%90%
36°FSep 25Sep 30Oct 3Oct 6Oct 10Oct 13Oct 16Oct 20Oct 24
32°FOct 3Oct 10Oct 14Oct 17Oct 20Oct 23Oct 26Oct 29Nov 2
28°FOct 13Oct 20Oct 24Oct 28Oct 30Nov 1Nov 4Nov 9Nov 14
24°FOct 25Oct 31Nov 1Nov 4Nov 7Nov 11Nov 14Nov 18Nov 23
20°FNov 2Nov 6Nov 10Nov 13Nov 16Nov 19Nov 23Nov 27Dec 2
16°FNov 9Nov 14Nov 18Nov 21Nov 24Nov 28Dec 1Dec 5Dec 11

Growing season length

Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.

Threshold10%20%30%40%50%60%70%80%90%
36°F185178173168165162158153147
32°F204196192188184180177172166
28°F224216211207203199195190184
24°F243236230226221217213207201
20°F262254248243238234229223215
16°F279271265260255251246240233

How often it gets that cold

The share of years with at least one night at or below each temperature.

36°F or colder
100% of years
32°F or colder
100% of years
28°F or colder
100% of years
24°F or colder
100% of years
20°F or colder
100% of years
16°F or colder
100% of years

Degree days

A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.

Heating degree days, base 65°F
5,874
Cooling degree days, base 65°F
1,070
Growing degree days, base 40°F
5,791
Growing degree days, base 45°F
4,594
Growing degree days, base 50°F
3,523
Growing degree days, base 55°F
2,576
Growing degree days, base 60°F
1,756

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,25700
February1,00504
March758243
April4108146
May15267388
June14224660
July1342806
August4291752
September80119492
October35617197
November732034
December1,10402

What this means

NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.

The station is 12.6 km from Stanberry. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

More

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00231822 (Conception). Public domain.